diff --git a/RedisStudyTest/RedisSetStudyTest.cs b/RedisStudyTest/RedisSetStudyTest.cs
new file mode 100644
index 0000000..34fce55
--- /dev/null
+++ b/RedisStudyTest/RedisSetStudyTest.cs
@@ -0,0 +1,97 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using StackExchange.Redis;
+
+using Xunit;
+using Xunit.Extensions;
+using Xunit.Serialization;
+using Xunit.Abstractions;
+using Xunit.Sdk;
+
+using RedisStuy;
+
+namespace RedisStudyTest
+{
+    /// <summary>
+    /// Redis 集合学习 测试
+    /// </summary>
+    [Trait("RedisSet", "All")]
+    public class RedisSetStudyTest:IDisposable
+    {
+        #region 初始化
+        private readonly ITestOutputHelper testOutput;
+        private IDatabase redisDatabase = null;
+        private RedisSetStudy redisSetStudy = null;
+        private TimeSpan defaultExpiry = TimeSpan.FromSeconds(20);
+        private string defaultRedisKey = "RedisStudy:Set:xUnitTest";
+
+        /// <summary>
+        /// 构造
+        /// </summary>
+        public RedisSetStudyTest(ITestOutputHelper output)
+        {
+            this.testOutput = output;
+            redisDatabase = RedisHelper.GetRedisDatabase();
+            redisSetStudy = new RedisSetStudy();
+        }
+        #endregion
+
+        #region SetAdd
+
+        [Fact]
+        public void SetAddOneTest()
+        {
+            var addResult = redisSetStudy.SetAdd(defaultRedisKey, "first");
+            Assert.True(addResult);
+
+            addResult = redisSetStudy.SetAdd(defaultRedisKey, "second");
+            Assert.True(addResult);
+
+            var setMembers = redisSetStudy.SetMembers(defaultRedisKey);
+
+            Assert.NotEmpty(setMembers);
+            Assert.Equal(2, setMembers.Length);
+            Assert.Contains("first", setMembers);
+            Assert.Contains("second", setMembers);
+        }
+
+        [Fact]
+        public void SetAddGroupTest()
+        {
+            RedisValue[] values = new RedisValue[]
+            {
+                "first",
+                "second",
+                "third",
+                "four",
+            };
+
+            var setAddNumber = redisSetStudy.SetAdd(defaultRedisKey, values);
+            Assert.Equal(4, setAddNumber);
+
+            //忽略已存在的项
+            setAddNumber = redisSetStudy.SetAdd(defaultRedisKey, values);
+            Assert.Equal(0, setAddNumber);
+
+            var setMember = redisSetStudy.SetMembers(defaultRedisKey);
+            Assert.Equal(4, setMember.Length);
+
+            Assert.Contains(values[0], setMember);
+            Assert.Contains(values[1], setMember);
+            Assert.Contains(values[2], setMember);
+            Assert.Contains(values[3], setMember);
+        }
+        #endregion
+
+        #region 清理
+        public void Dispose()
+        {
+            redisDatabase.KeyDelete(defaultRedisKey);
+        }
+        #endregion
+    }
+}
diff --git a/RedisStudyTest/RedisStudyTest.csproj b/RedisStudyTest/RedisStudyTest.csproj
index 0dc1c4e..a201176 100644
--- a/RedisStudyTest/RedisStudyTest.csproj
+++ b/RedisStudyTest/RedisStudyTest.csproj
@@ -80,6 +80,7 @@
     <Compile Include="RedisHashStudyTest.cs" />
     <Compile Include="RedisLockStudyTest.cs" />
     <Compile Include="RedisListStudyTest.cs" />
+    <Compile Include="RedisSetStudyTest.cs" />
     <Compile Include="RedisStringStudyTest.cs" />
     <Compile Include="RedisStudyTest.cs" />
     <Compile Include="RedisSortSetStudyTest.cs" />
diff --git a/RedisStuy/RedisSetStudy.cs b/RedisStuy/RedisSetStudy.cs
index 4e9bb6e..8cd9542 100644
--- a/RedisStuy/RedisSetStudy.cs
+++ b/RedisStuy/RedisSetStudy.cs
@@ -32,6 +32,7 @@ namespace RedisStuy
         /// <summary>
         /// 添加一组值到集合中
         /// </summary>
+        /// <returns>添加到集合中的元素的数量，不包括已经存在于集合中的所有元素。</returns>
         public long SetAdd(RedisKey key, RedisValue[] values, CommandFlags flags = CommandFlags.None)
         {
             return redisDatabase.SetAdd(key, values, flags);